With all these sightings of newer 15th and 16th editions in Waterstones and now selling on Amazon.de I thought I'd take a gamble on getting one from Amazon.co.uk... I'm very pleased to say I got the 15th printing! 
Special unjacketed hardback edition JRR Tolkien’s legacy of shorter works that inhabit the realm of The Hobbit, The Lord of the Rings and The Silmarillion, which were presented for publication by Christopher Tolkien.
Unfinished Tales is a collection of narratives ranging in time from the Elder Days of Middle-earth to the end of the War of the Ring, and provides those who have read The Lord of the Rings with a whole collection of background and new stories from the twentieth century’s most acclaimed popular author.
The book concentrates on the realm of Middle-earth and comprises such elements as Gandalf’s lively account of how it was that he came to send the Dwarves to the celebrated party at Bag-End, the emergence of the sea-god Ulmo before the eyes of Tuor on the coast of Beleriand, and an exact description of the military organization of the Riders of Rohan.
Unfinished Tales also contains the only story about the long ages of Númenor before its downfall, and all that is known about such matters as the Five Wizards, the Palantíri and the legend of Amroth. The tales were collated and edited by JRR Tolkien’s son and literary heir, Christopher Tolkien, who provides a short commentary on each story, helping the reader to fill in the gaps and put each story into the context of the rest of his father’s writings.
This special ‘collectors hardback’ edition of the work includes a unique cover design.
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